Although we all can agree that it's is Mount Everest situated in Himalayan ranges but let me tell you about Hawaii's Mauna Kea which is 1 million years old and lies in the Pacific Ocean. Without a doubt, the highest point of Everest is higher than Mauna Kea. The part of Mauna Kea that is above sea level is less than half the height of Everest at 4205 metres (13,796 feet). However, nearly half the mountain is below sea level. If we measure the entire mountain from top to its base, which is referred to as the ’dry prominence’, Mauna Kea is 500 metres (1640 feet) taller than Everest. Mauna’s whole height is about 9330 metres (30,610 feet) which is quite interesting!